History of updates
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October 25, 2012
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Scattering matrices for Pu-239 contained in the 2006 version were incorrect. The whole Pu-239 data were replaced with the calculations obtained by using NOY99.364.

April 3, 2006
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Corrections were made for scattering matrices of MT=91.

Dec. 4, 2003
============
The original JENDL-3.3 has two problems in Am-241 data. One is
the missing of MF/MT=4/18, and the other is incorrect neutron
spectra for MT=18 below 500 keV.

The updated data were produced as JENDL-3.3u. This version of
matxslib-j33 reflected the modifications.